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Finding the Fourth Proportional to 620,074.82, 855,788.82 and 344,494.46

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Solution

The fourth proportional to 620,074.82, 855,788.82 and 344,494.46 is: 475,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,074.82 : 855,788.82 = 344,494.46 : x
  2. Step 2: Convert to fraction form
    620,074.82/855,788.82 = 344,494.46/x
  3. Step 3: Cross multiply
    620,074.82x = 855,788.82 × 344,494.46
  4. Step 4: Simplify right side
    620,074.82x = 294,814,507,419.94
  5. Step 5: Solve for x
    x = 294,814,507,419.94/620,074.82
  6. Step 6: Final answer
    x = 475,449.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.